Michael Dell Chairman and CEO of Dell Inc arrives for the launch event of Windows 8 operating system in New YorkBy using Poornima Gupta AUSTIN, Texas (Reuters) – Michael Dell clinched shareholder approval on Thursday for his $25 billion offer to purchase and take Dell Inc personal, ending months of battle with the corporate's largest buyers and casting off the uncertainty surrounding the sector's No. three PC maker. Shareholders cast their votes at a different assembly on Thursday morning in Austin, Texas. In line with preliminary outcomes, the buyout won their go-ahead and the deal is predicted to close before the end of Dell's fiscal 1/3 quarter. The corporate's percent of internal transformation should now quicken. …